Water-cooled bearing for pump-shafts



A PLICATION FILED AUG-31, 1920.

Patented Aug. 2, 1921.

INVENTOR. Alfi'ed MARC/L61 BYQ ATTORNEY UNITED .STATES-llATENT OFFICE.

mun w.-A3GEEB, or sroox'ron, CALIFORNIA, sssreuon '10 s'rnnmuo mow .wonxs, or s'rocxron, crmmomvm, A CORPORATION.

wnmcoonnn ammo son PUMP-SHL'ETS.

Specification 01' Letters intent. v

Patented Aug. 2, 1921,

Application filed August 31,1920. Scrial'llo. ?,(l8t9.

To all whom it may COW/087%.

Be it known that I, ALFRED W. ARCHER, a citizen of the United States, residing st Stockton, in the county of San Joaquin, b State of California, have invented certain new and useful Improvements in Water-' Qooled Bearings for Pump-Shafts; and I do declare the following to be a full, clear, and exact description of the same, reference beto the characters of reference marked thereon, which form n port of this application.

invention relates-to improvements in pumps, and psrticulerl to water pumps of 15 the centrifugal type, t; e impellers or runners of which rotate at as high speed.

In this type of pump, the runner shaft naturally projects from the pump-casing in order it may he connected to e motor Zn or other form of driving means.

ne beerin s causing water to circuthe hearing in much the some manner as a cylinder is cooled, being e portion of that drawn from the well o other source of supply with ion o runner, so thstecontinw one and ever new of weher is had around the bearing, carrying on the heat of friction as soon it is generated, and of course heepinn t e heeringelweys cool.

A. second onject' is to so form the pump casing in connection with the shaft bearing en entirel inclosed and compact unit is land, precluing the possibility of leakage of sir or water into the water coolin area, and doine away with the necessity of any piping or oeher attachments.

A further ohgeco of the invention is to produce o simple and nexpensive device, and

feeturin in? had to the accompanying drawings, and

to eliminate Sshe over heating yet one which will for the purposes for These ob ects I be exceedingly efi'ective' which it is designed. accomplish by means of such structure and relativev srrungement of parts es will fully appear by u perusal of the following specification and claims.

The figure on the drawings is o, sectional plan view of my the water cooled 'beorino'.

Referring now more perticulor ly to the cherscters of reference on the drawings, the numeral 1 denotes the mein casing of the pump designed and constructed in. any suitable end approved manner, and containing the usual runner 2'mounted on o. shaft 3 which projects from one end of the casing.

Formed with the casing at this end and projecting outwardly therefrom concentric with the shaft and spaced e considerable distance therefrom is a cylindrical well 4., forming e chamber 5 about the shaft, and open st both ends. 1

The inner end of course communicetes with the intake chamber of the pump, either around the runner or through the usual counterbolencin holes 6 drilled through the adjacent well t ereof. The outer end of said well l is shouldered inwardly toward the shsft asst 7, to form n woter and air tight hecring for a. sleeve 8 projecting into the chamber 5 concentric with the chef-t but spaced therefrom and from the well l. This sleeve is fixed to the shoulder 7 by studs or on screws (not shown). I

rose-fitted into the sleeve 8 at the inner end thereof is a. bushing 9 which makes e running fit with the shaft 3, the outer pe-' riphery of the bushing being" cut for o certain portion of its length from the center toward the ends, as shown at 10, thus leaving on'inclosed space between the sleeve and brushing.

Ahole 11 is drdlled'through the sleeve 8 to provide communication between the chamber 5 end the space 10.

Between the shaft and sleeve at the cute endof the bushing is c quantit of packing 12, held tightly against the she t as is necessory by means of s'pecking gland 13 removobly fitted to the sleeve by means of cap screws 14.

through the sleeve 8 to communicate with the packing" 12..

improved pump structure,

It will thus be seen that with the operation of the pump, a certain amount of the water drawn up by the runner will pass into and out of the chamber 5, and also get into the space 10 surrounding the shaft bushing,

thus keeping the bearing cool at all times by reason of its constantly being changed and conducting the heat from the metal friction surfaces. The shaft will run satisfactorily without any lubricant, but if desired, a small hole may be drilled through the gland 13 to the shaft, and oil squirted thereinto occasionally. which oil will then of course be drawn along and spread over the entire bearing area.

From the foregoing description it will be readily seen that I have produced such a device as substantially fulfils the object of the invention as set forth herein.

While this specification sets forth in detail the present and preferred construction of the device still in practice such deviatitons from such detail may be resorted to as do not form a departure from the spirit of the invention as defined by the appended claims.

Having thus described my invention what I claim as new and useful and desire to secure by Letters Patent is 1. In a centrifugal pump, a casing, a runner therein, a shaft projecting from the casing and fixed to the runner, a circular extension formed with the casing and concentrio with and spaced from the shaft, and a bearing sleeve for the shaft fixed to the casing and positioned in the extension and spaced therefrom, the extension opening into the casing all about the bearing.

2. In a centrifugal pump, a casing, a runner therein, a shaft projecting from the casing and fixed to the runner, a circular extension formed with the casing and concentric with and spaced from the shaft, a sleeve surrounding the shaft and fitted in the extension and spaced therefrom, a bushing in said sleeve to form a bearing for the shaft, said bushing being cut away for a ing in said sleeve to form a bearing for the shaft, packing surrounding the shaft beyond the bushing, and means whereby a continuous supply of water may-come in contact with the packing and with the bushing for the greater part of'its length.

4. In a centrifugal pump, a casing, a runner therein, a shaft projecting from the casing and fixed to the runner, and a bearing for the shaft, the casing having a channel surrounding the bearing for the major portion of its length, said channel communicating with the interior of the casing all around the bearing.

5. In a centrifu al pump, a casing, a runner therein, a sha projecting from the casing and fixed to the runner, a sleeve surrounding the shaft and spaced therefrom, said sleeve projecting into the casing and adapted to be surrounded by Water, and a bushing in the sleeve forming'a bearing for the shaft, the bushing being cut away for a portion of its length around its outer surface, and the 'sleeve being provided with an orifice leading to the cut away portion of the bushing.

In testimony whereof I affix my si nature.

ALFRED W. ARC ER. 

